Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thuat san » thuat toan, thuat song, thuat lanh
hieu van » hieu va, thien van, lieu va
danh sai » dung sai, danh bat, danh dau
danh vai » danh va, doanh van, dang van
van cam » van nam, van lam, van cau
tao cao » bao cao, toan cao
xuc va » duc va, tuc va, luc va
cao xa » cao va, cho xa, bao xa
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (thuat san)) tao cao xa hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat san)) tao cao xa hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (thuat san)) tao cao xa hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat san)) tao cao xa hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) cua te*.